Spring Break in Cancun

In this March 10, 2012 photo, people hang out on the beach during spring break in Cancun, Mexico. While American tourism to Mexico slipped a few percentage points last year, the country remains by far the biggest tourist destination for Americans, according to annual survey of bookings by the largest travel agencies.  (AP)

In this March 15, 2012 file photo, navy sailors patrol as people sun bathe on the beach during spring break in Cancun, Mexico. While American tourism to Mexico slipped a few percentage points last year, the country remains by far the biggest tourist destination for Americans, according to annual survey of bookings by the largest travel agencies.  (AP)

In this March 7, 2012 photo, people bury each other in the sand on the beach during Spring Break in Cancun, Mexico.  (AP)

In this March 7, 2012 photo, a woman drinks at a bar during Spring Break in Cancun, Mexico. While American tourism to Mexico slipped a few percentage points last year, the country remains by far the biggest tourist destination for Americans, according to annual survey of bookings by the largest travel agencies.  (AP)

In this March 7, 2012 photo, people kiss at a bar during Spring Break in Cancun, Mexico. While American tourism to Mexico slipped a few percentage points last year, the country remains by far the biggest tourist destination for Americans, according to annual survey of bookings by the largest travel agencies.  (AP)